Answer:
the missing number is 18
Step-by-step explanation:
What would you do to 7 to get 21? multiply by 3. you would do the same to the 6. 
 
        
                    
             
        
        
        
Answer:
Area=76.56 square feet
Step-by-step explanation:
area of a rectangle =base*height = 5ft*8ft= 40 square feet
area of a triangle=(base*height)/2 =(4ft*4ft)/2= 8 square feet
area of a square=base*height =4ft*4ft= 16 square feet
area of a circle = * r^{2}[/tex]=3.14*
* r^{2}[/tex]=3.14* = 12.56 square feet
= 12.56 square feet
r = radius
Total area=(40+8+16+12.56)square feet
Total area=76.56square feet
 
        
             
        
        
        
Answer:
502.4
Step-by-step explanation:
Use tangent because the side you know and the side with x are both legs.  
Do 203/tan(22) and you should get your awnser.  
You devide by 203 because the rule is opposite over ajacent and 203 is the opposite side.
 
        
             
        
        
        
It is $2.80 off the t-shirt which would make the new price $11.20